#!/bin/sh

# Slackware build script for ppsspp

# Copyright 2016-2019 orbea
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=ppsspp
LIBNAM=${PRGNAM}_libretro
SRCNAM=$(printf %s $PRGNAM | tr [a-z] [A-Z])
BRANCH=${BRANCH:-master}
BUILD=${BUILD:-1}
TAG=${TAG:-_git}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -eu

UI=

[ "${QT:=0}" = 0 ] || QT=1
[ "${SDL:=1}" = 1 ] || SDL=0
[ "${LIBRETRO:=1}" = 1 ] || LIBRETRO=0

[ "$QT" != 1 ] || UI="${UI} qt"
[ "$SDL" != 1 ] || UI="${UI} sdl"
[ "$LIBRETRO" != 1 ] || UI="${UI} libretro"

[ "${UI}" ] ||
  { printf %s\\n 'ERROR: No frontends or libretro core enabled.' >&2; exit 1; }

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM
git clone --recursive --depth=1 -b $BRANCH https://github.com/hrydgard/$PRGNAM
cd $PRGNAM
[ "${COMMIT:=}" ] && git fetch --unshallow --tags && git checkout "$COMMIT"
HEAD="$(git rev-parse --short HEAD)"
DATE="$(git show -s --format=%cd --date=format:%Y.%m.%d)"
VERSION="${DATE}_$HEAD"
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

if [ "${DEBUG:=0}" != 0 ]; then
  [ "${ASAN:=OFF}" != OFF ] && ASAN=ON
  RELEASE=Debug
  SLKCFLAGS="$(printf %s "$SLKCFLAGS" | sed 's/-O2/-O0/')"
else
  ASAN=OFF
  RELEASE=Release
fi

LIBZIP=OFF
SNAPPY=OFF

if [ "${SYSTEM_LIBZIP:-1}" = 1 ] && pkg-config --exists libzip; then
  LIBZIP=ON
fi

if [ "${SYSTEM_SNAPPY:-1}" = 1 ] && [ -f /usr/include/snappy.h ]; then
  SNAPPY=ON
fi

[ "${DISCORD:=OFF}" = OFF ] || DISCORD=ON
[ "${GLES:=OFF}" = OFF ] || GLES=ON

mkdir -p $PKG/usr/share/applications

eval "set -- $UI"

for ui do
  case "$ui" in
    qt )
      LIBRETRO_CORE=OFF
      QT_UI=ON
      BIN=${SRCNAM}Qt
      DIR=/usr/games
      OUT=$PRGNAM-$ui
      PERM=0755
    ;;
    sdl )
      LIBRETRO_CORE=OFF
      QT_UI=OFF
      BIN=${SRCNAM}SDL
      DIR=/usr/games
      OUT=$PRGNAM
      PERM=0755
    ;;
    libretro )
      LIBRETRO_CORE=ON
      QT_UI=OFF
      BIN=lib/$LIBNAM.so
      DIR=/usr/lib${LIBDIRSUFFIX}/libretro
      OUT=/$LIBNAM.so
      PERM=0644
    ;;
  esac

  mkdir -p build-$ui
  cd build-$ui
    cmake -GNinja \
      -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
      -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
      -DCMAKE_INSTALL_PREFIX=/usr \
      -DCMAKE_SKIP_RPATH=TRUE \
      -DLIBRETRO=$LIBRETRO_CORE \
      -DUSING_QT_UI=$QT_UI \
      -DUSE_ADDRESS_SANITIZER=$ASAN \
      -DUSE_DISCORD=$DISCORD \
      -DUSING_GLES2=$GLES \
      -DUSE_SYSTEM_SNAPPY=$SNAPPY \
      -DUSE_SYSTEM_LIBZIP=$LIBZIP \
      -DCMAKE_BUILD_TYPE=$RELEASE ..
    "${NINJA:=ninja}"

    # No install target
    mkdir -p -- "$PKG/$DIR"
    cp -- "$BIN" "$PKG/$DIR/$OUT"
    chmod "$PERM" -- "$PKG/$DIR/$OUT"
  cd ..

  if [ "$ui" = qt ] || [ "$ui" = sdl ]; then
# Write a desktop file
cat > $PKG/usr/share/applications/$OUT.desktop <<EOF
[Desktop Entry]
Name=$OUT
Exec=$OUT
Icon=$PRGNAM
Type=Application
Comment=$PRGNAM (fast and portable PSP emulator)
Categories=Game
EOF
  fi
done

if [ "$QT" = 1 ] || [ "$SDL" = 1 ]; then
  # Install the assets and libretro core from
  # the last build directory as they are the same.
  mkdir -p $PKG/usr/share/$PRGNAM
  cp -a build-$ui/assets $PKG/usr/share/$PRGNAM
  find $PKG/usr/share/$PRGNAM -name '.git*' -exec rm -f {} \;

  # Install hicolor
  for dir in icons/hicolor/* ; do
    if [ -f "$dir/apps/$PRGNAM.png" ]; then
      install -Dm0644 "$dir/apps/$PRGNAM.png" \
        "$PKG/usr/share/$dir/apps/$PRGNAM.png"
    fi
  done
  install -Dm0644 icons/icon-512.svg $PKG/usr/share/pixmaps/$PRGNAM.svg
fi

if [ "$LIBRETRO" = 1 ]; then
  curl --create-dirs -o $PKG/usr/lib${LIBDIRSUFFIX}/libretro/info/$LIBNAM.info \
    https://raw.githubusercontent.com/libretro/libretro-super/master/dist/info/$LIBNAM.info
  find $PKG/usr/lib${LIBDIRSUFFIX}/libretro -mindepth 1 -type d -exec chmod 755 {} \;
fi

if [ "$DEBUG" = 0 ]; then
  find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" |
    grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
fi

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a LICENSE.TXT README.md korean.txt chinese.txt $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-${VERSION}_$BRANCH-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
